magadiiten.

Brit.

/məˈɡadɪʌɪt/, U.S.

/məˈɡædiˌaɪt/

Origin: From a proper name, combined with an English element. Etymons: proper name Magadi , -ite suffix¹.

Etymology: < the name of Lake Magadi ( < Swahili magadi potassium, soda) in Kenya, where the mineral was discovered in 1967 + -ite suffix¹.

Mineralogy.

A rare clay mineral, a monoclinic sodium silicate, NaSi₇O₁₃(OH)₃·4H₂O, found in putty-like layers deposited from brines of some former lakes.

ΚΠ

1967 H. P. Eugster in Science 8 Sept. 1178/3 This white layer, with the consistency of soft putty, is composed predominantly of spherulites of a well-crystallized hydrous sodium silicate, here named magadiite.

1975 Amer. Mineralogist 60 643/2 Above 100°C the magadiite becomes dehydrated, and the basal spacing decreases to 11.5 Å.

1979 M. Leakey Olduvai Gorge 84 It forms only in soda or alkaline lakes with high concentrations of sodium carbonate, such as Lake Magadi in Kenya... In these lakes sodium combines with silica which is brought into the lakes by rivers, to form rare sodium-silicate minerals such as magadiite.

1995 Clay Minerals 30 77 The silhydrite could be formed from magadiite..by leaching Na out by surface or near-surface water.

This is a new entry (OED Third Edition, March 2000; most recently modified version published online March 2022).

单词	magadiite
释义	magadiiten. Brit. /məˈɡadɪʌɪt/, U.S. /məˈɡædiˌaɪt/ Origin: From a proper name, combined with an English element. Etymons: proper name Magadi , -ite suffix¹. Etymology: < the name of Lake Magadi ( < Swahili magadi potassium, soda) in Kenya, where the mineral was discovered in 1967 + -ite suffix¹. Mineralogy. A rare clay mineral, a monoclinic sodium silicate, NaSi₇O₁₃(OH)₃·4H₂O, found in putty-like layers deposited from brines of some former lakes. ΚΠ 1967 H. P. Eugster in Science 8 Sept. 1178/3 This white layer, with the consistency of soft putty, is composed predominantly of spherulites of a well-crystallized hydrous sodium silicate, here named magadiite. 1975 Amer. Mineralogist 60 643/2 Above 100°C the magadiite becomes dehydrated, and the basal spacing decreases to 11.5 Å. 1979 M. Leakey Olduvai Gorge 84 It forms only in soda or alkaline lakes with high concentrations of sodium carbonate, such as Lake Magadi in Kenya... In these lakes sodium combines with silica which is brought into the lakes by rivers, to form rare sodium-silicate minerals such as magadiite. 1995 Clay Minerals 30 77 The silhydrite could be formed from magadiite..by leaching Na out by surface or near-surface water. This is a new entry (OED Third Edition, March 2000; most recently modified version published online March 2022). < n.1967
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